24
Control
Configuration and Function Registers
These registers affect the operation of the instrument.
Data Address R/W
Notes
21
R/W
The baud rate:
0: 4800
1: 9600
2: 19200
3: 38400
4: 57600 Added in
V2.2.2.
5: 115200 Added in
V2.2.2.
25
R
The firmware version. If the version is Va.b.c, it is encoded as
256*a + 16*b + c.
26–31
R
The serial number of the instrument. A string of characters in
MODBUS, two characters per register.
32
R
The flow sensor offset; the integer ADC reading that is defined
as zero flow.
35–36
R
The full scale range of the flow, an unsigned 4-byte integer in
SCCM.
39
W
Write 0xAA55 (43605) to tare instrument flow. Note that
performing a tare will interrupt any currently executing
measurement.
45
R/W
The MODBUS address of the instrument. An integer between 1
and 247, inclusive. If a value outside of that range is written to
the register, the address will be set to 1.
Added in V2.4.0.
46
R/W
The text unit ID of the instrument. A byte between ASCII A
and Z (decimal values 65 to 90), inclusive. If a value outside of
that range is written to the register, the unit ID will be set to A
(decimal 65).
Added in V2.4.0.
47-48
R
The full scale flow of the instrument, an unsigned 4-byte integer.
Flow (flow units) = value / 1000.
Added in V2.4.0.
